JP3194545B2 - Suspended lubrication system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension type lubricating apparatus which is used in a gas station or the like and supplies an oil liquid such as gasoline or light oil to a fuel tank of an automobile.

[0002]

2. Description of the Related Art In a gas station, for gasoline supply,
An oil supply device is provided for each type of oil supply, such as for light oil supply.

[0003] Therefore, in this type of refueling device, when refueling a tank or the like of a customer's automobile, for example, a location where gasoline is to be supplied is erroneously refueled using a refueling device for supplying light oil. To prevent refueling accidents,
It tends to be provided with an oil type discriminating function. The oil supply device provided with the oil type discriminating function suctions the vapor of the residual oil liquid in the tank for refueling and applies the oil type to the oil vapor sensor (oil type detection sensor) of the oil type discrimination device. It is determined that refueling is possible only when the oil type of the remaining oil liquid in the tank matches the oil type of the oil supply from a predetermined oil supply device.

[0004] The oil type discriminating function tends to be employed not only in a lubrication system of a ground type but also in a suspension type lubrication system having a delivery unit installed at a high point of a gas station.
A suspension type lubricating apparatus having an oil type discriminating function is being developed.

[0005] In this type of suspension type refueling device, a delivery unit is provided at a location of a fueling station, such as a ceiling or a canopy, where a refueling hose having a refueling nozzle connected to a tip thereof is suspended. For example, a refueling nozzle elevating mechanism including a hose reel around which a refueling hose is wound and a motor for driving the hose reel to rotate forward and backward is housed. At the start of refueling work, the hose reel is rotated forward to lower the refueling nozzle at a height that does not obstruct the running of the vehicle to a height position suitable for refueling work. The refueling operation is performed by operating the nozzle lever by inserting it into the refueling port, and at the end of the refueling operation, the refueling nozzle, which is at a height suitable for the refueling operation, is raised to a height that does not hinder the traveling of the vehicle. ing. And a measuring unit provided for each refueling device, including a pump for supplying the oil liquid from the oil storage tank to the refueling nozzle and a flow meter for measuring the amount of oil discharged from the refueling nozzle, The refueling amount indicator for displaying the refueling amount is collectively installed in a place remote from the delivery unit, for example, in a measuring room of a refueling station building or on a wall portion where the view in the refueling station is effective.

[0006]

However, in the above-mentioned suspension type lubricating apparatus, the metering unit and the lubricating amount indicator are assembled at a place remote from the delivery unit, as described above, unlike the above-described lubricating apparatus which is mounted on the ground. Since it is installed, the distance between the delivery unit and the metering unit or the refueling amount indicator corresponding to the refueling nozzle of the delivery unit differs for each delivery unit. Also, the height of the gas station at which the delivery unit itself is provided is not constant for each gas station, and the oil hose is longer than in the case of a ground-mounted oil device.

Therefore, when the oil type discriminating function described above is to be added to a suspension type lubricating apparatus, a pump, a flow meter, and a lubricating amount indicator are housed in a casing provided on an island, and the casing is mounted on the island. This is different from the case where the oil type discriminating function is added to the above-ground type lubricator that leads out a fixed-length lubrication hose with a lubrication nozzle at the tip. The oil type can be detected and determined simply by providing a suction pump or other device for supplying the oil vapor remaining in the tank for performing the oil supply operation to the oil vapor sensor at a predetermined position of the suspension-type oil supply device. Accuracy and response are likely to vary for each refueling nozzle suspended from each delivery unit, and the oil type discrimination level based on the sensor output and the suction capacity of the suction pump are determined according to the installation status of each delivery unit. There must be.

Therefore, an object of the present invention is to provide a suspension type lubricating apparatus which solves the above-mentioned problems.

[0009]

According to the first aspect of the present invention,
A refueling hose with a refueling nozzle connected to the tip is suspended from a delivery unit provided at a high point of the refueling station, and a lifting mechanism provided in the delivery unit is driven to connect to the tip of the refueling hose. In a suspension type refueling device configured to raise and lower the refueling nozzle between a height position suitable for refueling work and a height position that does not hinder the traveling of the vehicle, the tank for performing refueling work by the refueling nozzle In order to suck the vapor remaining in the oil supply nozzle, one end opens to the tip side of the oil supply nozzle, and the other end extends through a vapor suction passage extending along the oil supply hose to a high point of the oil filling station. An oil type detection sensor provided for each oil supply nozzle and oil supply hose, for detecting the oil type in the fuel tank based on the vapor concentration sucked through the vapor suction passage in each of the vapor suction passages. A pump for sucking an atmosphere around the opening from the one end side opening of the vapor suction passage to the oil type detection sensor; an oil type detection sensor and a pump provided in each of the vapor suction passages are provided at one end of the vapor suction passage; A suspension type lubrication device, wherein the suspension type lubrication device is disposed at the same distance from the side.

According to a second aspect of the present invention, an oil supply hose having an oil supply nozzle connected to a tip thereof is suspended from a delivery unit provided at a high point of a gas station, and provided in the delivery unit. A suspension type lubricating device configured to drive an elevating mechanism to raise and lower a refueling nozzle connected to a tip of the refueling hose between a height position suitable for refueling work and a height position which does not hinder the traveling of the vehicle. At one end is opened at the tip side of the refueling nozzle, in order to suck the vapor remaining in the tank for performing refueling work by the refueling nozzle,
The other end of the refueling nozzle of the suspension type refueling device includes a vapor suction passage having the other end extending to a high point of the refueling station along the refueling hose.
Each of the vapor suction passages is provided with an oil type detection sensor for detecting an oil type in the fuel tank based on the vapor concentration sucked through the vapor suction passage. The oil type detection sensors respectively provided in the passages are arranged at positions at the same distance from one end of the vapor suction passage, are communicated with the respective vapor suction passages, and are connected from the one end side opening of the respective vapor suction passages to the periphery of the opening. A common pump for sucking the atmosphere is provided so that the distance between each of the oil type detection sensors and the common pump is the same.

According to a third aspect of the present invention, a refueling hose having a refueling nozzle connected to a tip thereof is suspended from a delivery unit provided at a high point of a fueling station, and is provided in the delivery unit. A suspension type lubricating device configured to drive an elevating mechanism to raise and lower a refueling nozzle connected to a tip of the refueling hose between a height position suitable for refueling work and a height position which does not hinder the traveling of the vehicle. At one end is opened at the tip side of the refueling nozzle, in order to suck the vapor remaining in the tank for performing refueling work by the refueling nozzle,
The other end of the refueling nozzle of the suspension type refueling device includes a vapor suction passage having the other end extending to a high point of the refueling station along the refueling hose.
Each of the vapor suction passages is provided with an oil type detection sensor for detecting an oil type in the fuel tank based on the vapor concentration sucked through the vapor suction passage. The oil type detection sensors respectively provided in the passages are arranged at positions at the same distance from one end of the vapor suction passage, are communicated with the respective vapor suction passages, and are connected from the one end side opening of the respective vapor suction passages to the periphery of the opening. A common pump for sucking the atmosphere is provided so that the distance between each of the oil type detection sensors and the common pump is the same distance, and the common pump is provided regardless of the number of the vapor suction passages which simultaneously perform suction. In addition, the apparatus is characterized in that suction amount adjusting means is provided for making the suction amount of the atmosphere sucked through each vapor suction passage constant.

[0012]

According to the first aspect of the present invention, the suspension-type refueling device is provided for each refueling nozzle and refueling hose, one end of which is open to the tip side of the refueling nozzle, and the other end of which has a refueling station height along the refueling hose. Each oil supply nozzle,
Since the oil type detection sensor and the suction pump are arranged at the same distance from one end of the vapor suction passage without changing for each oil supply hose, the oil type of the oil type detection sensor for each oil supply nozzle and oil supply hose The detection accuracy becomes uniform, and the oil type detection accuracy of each oil type detection sensor can be stabilized to improve reliability.

According to a second aspect of the present invention, in the first aspect of the present invention, the suction pump provided for each oil supply nozzle and each oil supply hose is a single common pump, and this pump is provided with each of the oil type detection sensors. Since the distance between the oil pump and the common pump is the same, the accuracy of oil type detection of each oil type detection sensor can be stabilized and reliability can be improved. The installation space for the refueling device can be made more efficient.

According to a third aspect of the present invention, in accordance with the second aspect of the present invention, the amount of suction of the atmosphere sucked through each of the vapor suction passages is controlled regardless of the number of the vapor suction passages for simultaneously sucking the common pump. Since the suction amount adjusting means is provided to make the oil level constant, even if the refueling work for each refueling nozzle and refueling hose is performed simultaneously in parallel, the oil type detection for each refueling nozzle and refueling hose is performed. The oil type detection accuracy of the sensors is uniform, and not only can the oil type detection accuracy of each oil type detection sensor be stabilized and reliability can be improved, but also the oil type identification work can be performed at the same time. , Speedup and improvement of refueling service.

[0015]

1 to 10 show an embodiment of a suspension type lubricating apparatus according to the present invention.

In each of the figures, reference numeral 1 denotes a gas station site, and 2 denotes a building (office) provided on the gas station site 1. Above the site 1, a high place 3 including a ceiling, a beam, a canopy and the like is formed.

The suspension type lubricating apparatus has a delivery unit 10 installed at the high place 3, an oil supply hose 13 fed from the delivery unit 10, and an oil supply nozzle 14 connected to the oil supply hose 13. In the case of the present embodiment, an example in which four single-type suspended weighing machines in which only one oil supply hose 13 having an oil supply nozzle 14 is suspended from one delivery unit 10 is disposed, It is assumed that four delivery units 10 (10A to 10D) are arranged at a high place 3.

Inside the wall 2a of the building 2 and at a high place 3, a fuel supply pipe 4 (4A-4D) is provided for each fuel supply hose 13 and each fuel supply nozzle 14 of each delivery unit 10 (10A-10D).
One end of each refueling pipe 4 is connected to the inside of a delivery unit 10 (10A to 10D) described later, and the other end is communicated with an underground tank 5 installed underground on the site 1. In the middle of the oil supply pipe 4 (4A-4D), an oil supply pump 7 (7A-7D) driven by a pump motor 6 (6A-6D) and a flow meter 8 (8A-8D) for measuring an oil supply amount are provided. And each flow meter 8 (8A-8
D) is provided with a flow rate transmitter 9 (9A to 9D) for transmitting a flow rate pulse signal proportional to the flow rate.

As described above, the delivery units 10 (10A to 10D) installed at the high places 3 have the same configuration in the present embodiment, in which four single-type suspension weighing machines are provided. Therefore, here, the configuration of one delivery unit 10 will be described.

The delivery unit 10 includes a rotatable hose reel 11 and a hose lifting / lowering motor 12 for rotating the hose reel 11 forward / reverse via a chain 12a, and has a lifting / lowering mechanism 10a. One end of one oil supply pipe 4 is connected to the hose reel 11, and an oil supply hose 13 is provided by winding a base end of the oil supply pipe 4 so as to communicate with the oil supply pipe 4. A refueling nozzle 14 is attached. As shown in FIG. 3, a switch box 15 for detecting a nozzle position is provided in the delivery unit 10.
A storage position detection switch 5 detects that the refueling nozzle is located at an upper end position (storage position) C near the delivery unit 10 as shown in FIG. .8m standby position B
And a refueling position detection switch (both not shown) for detecting that the vehicle is located at a refueling position A which is a position suitable for refueling the vehicle. Connected to the control device 18.

Reference numeral 19 denotes an indicator provided at a position that is easy for the customer to see, for example, at a high place 3, and the indicator 19 is a display such as a reversing plate display or a plasma display. And
The indicator 19 is connected to the flow transmitter 9 via a counting circuit and a drive circuit (not shown) built in the control device 18, and displays a refueling amount calculated based on a flow pulse signal from the flow transmitter 9. It is configured to:

Further, a hand switch box 20 is provided so as to be interposed between the refueling hose 13 and the refueling nozzle 14, and the hand switch box 20 is provided with an up switch 21a and a down switch 21b of the refueling hose 13. . The lowering switch 21b can also be operated by pulling down the cord 22, whereby the refueling hose 13 is extended to lower the refueling nozzle 14 from the standby position B to the refueling position A. After the refueling operation is completed at the refueling position A, when the raising switch 21a of the hand switch box 20 is pressed down, the refueling hose 13 is wound into the delivery unit 10 and the refueling nozzle 14 moves up to the standby position B. .

The lowering switch 21b also functions as a reset switch for the indicator 19 in preparation for the current refueling operation. The refueling amount display at the time becomes zero and the refueling nozzle 14 moves down to the refueling position A. The up switch 21a and the down switch 21b are connected to a signal line 23 built in the refueling hose 13.
(Indicated by a broken line in FIG. 1) to the control device 18.

A main switch box 24 is provided on the wall surface 2a of the building 2. The main switch box 24 has a lift switch 25 for raising the fueling nozzle 14 at the standby position B to the upper end position C. And a lowering switch 26 for lowering the refueling nozzle 14 at the upper end position C to the standby position B.

The main switch box 24 is connected to the control device 18. The operation of the up switch 25 and the down switch 26 controls the drive of the hose reel 11 in the hose winding direction or the hose unwinding direction.

As shown in FIG. 3, the delivery unit 10 is a lifting mechanism 1 composed of the hose reel 11 and the motor 12.
0a and a moving mechanism 10b for moving the suspension position of the refueling hose 13 in the horizontal direction (X direction). The moving mechanism 10b is composed of a pair of guide rails 27 laid horizontally on the bottom of the delivery unit 10. , A cart 28 that moves along the guide rail 27, and a rotating arm 2 that holds the cart 28
9, the delivery unit 10 (ie, the carriage 2) can be moved even if the carriage 28 is moved along the guide rail 27.
Keep the hose suspension length from 8) unchanged.

Since a hose outlet (described later) through which the refueling hose 13 is inserted is formed at the center of the carriage 28, the worker pulls the refueling hose 13 in the X direction before performing the refueling operation. The cart 28 is a guide rail 27
In the X direction to move the suspension position of the refueling hose 13.

The rotating arm 29 has one end rotatably connected to the first arm 29a supported on the top plate of the delivery unit 10 and one end rotatably connected to the first arm 29a.
And a second arm 29b rotatably connected to the carriage 8 so that even when the carriage 28 is moved by the guide rail 27, the hose suspension length from the delivery unit 10 (that is, the carriage 28) does not change. To keep.

Reference numeral 30 denotes a flexible vapor suction tube, one end of which is open at the tip of the oil supply nozzle 14, and the other end of which is connected to an oil type determination / recovery pipe in the delivery unit 10. The vapor suction tube 30 is connected to the oil supply hose 13.
Is spirally wound around the outer periphery of the oil supply hose 13 so as to be able to expand and contract in accordance with the elevation of the hand switch box 20 and the inside of the hand switch box 20 so as not to hinder the operation of the up switch 21a and the down switch 21b of the hand switch box 20. And reaches the refueling nozzle 14.

Numeral 31 denotes an oil type judging / recovery line. As shown in FIG. 5, a detecting line 31a connected to the vapor suction tube 30 in the delivery unit 10 and a detecting line 31 are provided.
a, and an exhaust pipe 31c branched and connected to the detection pipe 31a.

Further, an oil type detection sensor (oil vapor sensor) 32 for detecting the oil type from the oil vapor pressure sucked from the vapor suction tube 30 is provided in the middle of the detection pipe 31a. The intake pipe 31b is connected to an intake pump 33, and the exhaust pipe 31c is connected to an exhaust pump. As shown in FIG. 2, the intake pump 33 and the exhaust pump 34 are stacked in two stages in a non-explosion-proof place on the high place 3, and the oil type detection provided in each of the delivery units 10A to 10D is performed. The suction nozzles 14 are provided at positions where the distances L of the suction passages to the sensor 32 are equal to each other, and as a result, the refueling nozzle 14 suspended from each of the delivery units 10A to 10D.
The distance of the suction path between the tip of the vapor suction tube 30 and the opening of the vapor suction tube 30 is also equal for each refueling nozzle 14.

Reference numeral 35 denotes a three-way switching valve constituted by an electromagnetic valve, to which the other end of the detection pipe 31a, the intake pipe 31b, and the exhaust pipe 31c are connected. The three-way switching valve 35 supplies the vapor of the fuel tank 36 sucked by the vapor suction tube 30 to the oil type detection sensor 32 by connecting the detection pipe 31a and the intake pipe 31b when determining the oil type, as described later. The control is switched so that the vapor that has passed through the sensor 32 is exhausted into the atmosphere. During the refueling after the oil type determination, the detection pipe 3
1a and the exhaust pipe 31c are connected to each other so that the vapor adhering to the sensor 32 and the vapor remaining in the vapor suction tube 30 are purged outward from the oil supply nozzle 14 side.

As the oil type detection sensor 32, for example, a semiconductor type gas sensor that changes a signal output according to the vapor pressure of vapor is used. The saturated vapor pressure differs depending on the type of oil (gasoline and light oil in this embodiment) of the remaining liquid in the fuel tank 36, and gasoline has a higher saturated vapor pressure than light oil.
Accordingly, when gasoline vapor is sucked, the sensor 32
Output increases, and the output of the sensor 32 when light oil vapor is sucked decreases. When the output of the sensor 32 is supplied to the control device 18, the control device 18
The oil type of the fuel tank 36 is determined based on the vapor sucked based on the output from the fuel tank 36, and the determined oil type of the fuel tank 36 and the oil type supplied from the preset refueling nozzle 14, that is, the oil type of the underground tank 5 are determined. It is determined whether or not the oil type matches, and the oil supply pump 7 is started only when both match.

The oil type detection sensor 32 and the three-way switching valve 35 are provided on the right side wall in the delivery unit 10 as shown in FIGS. In each of the delivery units 10A to 10D, the oil type detection sensor 32 is provided at the same position. This is because the distance from the oil supply nozzle 14 to the oil type detection sensor 32 is different from each of the delivery units 10A to 10A.
10D, the conditions from the start of vapor suction in the fuel tank 36 to the detection of the oil type in the delivery unit 10 are made the same.
Each time, that is, it becomes constant for each refueling nozzle 14.

That is, as described above, the oil type detection sensor 32 is a sensor 32 of a semiconductor type or the like whose output changes in accordance with the vapor pressure of the vapor. The controller 18 determines whether or not the output level of the sensor 32 has exceeded a preset oil type determination level, for example, on condition that the refueling nozzle 14 has been inserted into the refueling port of the fuel tank for refueling work. The type of oil in the fuel tank is determined to be gasoline or light oil.

Specifically, since the saturated vapor pressure of light oil is low, considering the detection environmental conditions such as temperature, the output level of the sensor 32 with respect to the atmosphere (the refueling nozzle is not yet inserted into the refueling port of the fuel tank) The difference between the output level of the sensor 32 in the state of being inserted into the filler port of the fuel tank of light oil and the output level of the sensor 32 in the state of being inserted into the filler port of the fuel tank of light oil is determined by the The difference between the output level and the output level of the sensor 32 when inserted into the filler port of the gasoline fuel tank does not clearly appear as the output level of the sensor 32.

Therefore, in practice, the control device 18 determines the oil type determination level as the output level of the sensor 32 when inserted into the filler port of the fuel tank for light oil and the state when the controller 18 is inserted into the filler port of the gasoline fuel tank. A predetermined level between the output level of the sensor 32 and the output level of the sensor 32 is set and stored in advance as a gasoline determination level. When the refueling nozzle 14 is inserted into the refueling port of the fuel tank, the output level of the sensor 32 becomes the predetermined level. Is exceeded, the oil type of the fuel tank is gasoline, and the output level of the sensor 32 does not exceed the predetermined level even after a predetermined time (oil type detection time) preset and stored in the control device 18 has elapsed. At that time, the oil type of the fuel tank is determined to be light oil.

However, from the opening of the vapor suction tube 30 at the nozzle tip of each refueling nozzle 14, the sensor 32
If the distances of the suction paths to
Even when the fueling nozzle 14 is inserted into the fueling port of the gasoline fuel tank, the gasoline vapor does not sufficiently reach the sensor 32 within the oil type detecting time, and the oil type of the fuel tank is erroneously changed to light oil. It may be determined.

In the present embodiment, as described above, the refueling nozzle 1 suspended from each of the delivery units 10A to 10D
4 The distance from the opening of the vapor suction tube 30 at the tip to the oil type detection sensor 32, and the oil supply nozzle 14 suspended from each of the delivery units 10A to 10D as described later.
Since the distance of the suction path from the opening of the vapor suction tube 30 at the distal end to the suction pump 33 is constant between the refueling nozzles 14 of each suspension-type weighing machine, the refueling nozzle 1 of each suspension-type weighing machine is
The output of the oil type detection sensor 32 of No. 4 does not vary between the oil supply nozzles 14 and a stable output is always obtained, and the reliability of the oil type detection of the control device 18 is improved.

That is, as shown in FIG. 2, the intake pump 33 and the exhaust pump 34 are connected to each delivery unit 10A.
It is provided at a position where the distance L between the oil type detection sensor 32 and the three-way switching valve 35 provided within 10 to 10D is equal. Therefore, as shown in FIG. 6, the oil supply nozzle 14 of each of the delivery units 10A to 10D, the oil type detection sensor 3
The two- and three-way switching valve 35 includes an intake pump 33 and an exhaust pump 3
4 are provided so that the distances of the suction paths up to 4 are equal. Therefore, when detecting the oil type, each delivery unit 10A ~
The vapor suction force supplied to the 10D oil type detection sensor 32 becomes constant, the oil type detection of each oil type detection sensor 32 is stabilized, and the reliability of the oil type detection is enhanced.

Here, a description will be given of the processing performed by the control device 18 of each single-type suspension-type weighing machine together with the refueling operation of the suspension-type refueling device having the above-described configuration.

In FIG. 7, the control device 18 determines in step S1
In step (hereinafter "step" is omitted), it is checked whether the down switch 26 is turned on. When the down switch 26 is turned on, the process proceeds to S2, in which an intake pump drive instruction signal is output to the suction / exhaust drive control device 50 described later to prepare for starting suction from the opening of the vapor suction tube 30. Subsequently, the hose lowering signal is energized to activate the hose raising / lowering motor 12 for driving the hose reel 11 in the delivery unit 10 in the hose lowering direction (S3).

In the next step S4, it is checked whether or not the refueling position detection switch provided in the switch box 15 for detecting the nozzle position in the delivery unit 10 has been turned on. When the hose reel 11 is driven, the refueling nozzle 14
Moves to the refueling position A and the refueling position detection switch is turned on, the process proceeds to S5, and the hose lowering signal is extinguished. Subsequently, the three-way switching valve 35 is switched to the intake side to switch the detection pipe 31.
a and the suction pipe 31b (S6), and the atmosphere around the opening of the vapor suction tube 30 is changed to the oil type detection sensor 32.
Will be supplied to

In the next S7, an oil type determination process is performed. That is, since the saturated vapor pressure differs depending on the oil type (gasoline and light oil in this embodiment) of the remaining liquid in the fuel tank 36, and the saturated vapor pressure is higher in gasoline than in light oil, the oil type detection sensor 32 The output increases when gasoline vapor is sucked, and decreases when gas oil vapor is sucked. Therefore, the oil type determination is performed based on the output from the oil type detection sensor 32.

More specifically, in the control device 18,
When the three-way switching valve 35 is switched to the intake side in S6, the internal timer of the control device 18 is reset and started to measure a predetermined oil type detection time, and the output level of the oil type detection sensor 32 becomes A predetermined oil type determination level between the output level of the sensor 32 when inserted into the filler port of the light oil fuel tank and the output level of the sensor 32 when inserted into the filler port of the gasoline fuel tank. Or not, and whether the time measured by the internal timer has reached a predetermined oil type detection time,
If the output level of the oil type detection sensor 32 exceeds the oil type determination level before the time measured by the internal timer reaches the predetermined oil type detection time, the oil type in the fuel tank is determined to be gasoline, If the output level of the oil type detection sensor 32 does not exceed the oil type determination level when the time value measured by the timer reaches a predetermined oil type detection time, the oil type of the fuel tank is determined to be light oil. Has become.

After the determination of the oil type, the process proceeds to S8, in which the control device 18 switches the three-way switching valve 35 to the exhaust side to connect the detection pipe 31a and the exhaust pipe 31c. Subsequently, the output of the intake pump drive instruction signal to the intake / exhaust drive control device 50 is deactivated (S9), and the exhaust pump drive instruction signal is output to the intake / exhaust drive control device 50 instead (S10). ), Supplying outside air into the vapor suction tube 30 to detect the oil type detection sensor 3
The vapor adhering to 2 and the vapor remaining in the vapor suction tube 30 are discharged from the opening of the suction tube 30,
Prepare for the next oil type detection.

In S11, when the oil type of the underground tank 5 previously set and stored in the control device 18 matches the oil type of the fuel tank 36 determined by the control device 18 in the above-described processing of S7, the flow proceeds to S12. Then, the motor 6 of the oil supply pump 7 is energized to pump up the oil liquid stored in the underground tank 5, and the oil supply hose 13 and the oil supply nozzle 1 are supplied through the oil supply pipe 4.
Feed to 4.

Then, the nozzle lever (not shown) of the fuel supply nozzle 14 inserted into the fuel supply port 36a of the fuel tank 36 is gripped, the main valve is opened, and the oil liquid supplied from the underground tank 5 is used as fuel. When the tank 36 is refueled, S1
At 3, the refueling amount is calculated based on the flow rate pulse signal from the flow rate transmitter 9 and displayed on the indicator 19.

When refueling of the fuel tank 36 is completed and the refueling operator removes the refueling nozzle 14 from the refueling port 6a and turns on the raising switch 21a of the hand switch box 20 (S14), the process proceeds to the next S15, and refueling is performed. The motor 6 of the pump 7 is deenergized, and the hose raising drive signal is energized (S1).
6) The hose reel 11 is driven to rotate in the hose winding direction.

In the next step S17, it is checked whether the standby position detection switch provided in the switch box 15 for detecting the nozzle position in the delivery unit 10 has been turned on. When the refueling nozzle 14 rises from the refueling position to the standby position and the standby position detection switch is turned on, the process proceeds to S18 to deactivate the hose raising drive signal, and then the exhaust gas output to the intake / exhaust drive control device 50 in S19. Deactivate the pump drive instruction signal to remove the vapor suction tube 30 and the detection pipe 3
The vapor removal of 1a ends.

If the oil type of the underground tank 5 does not match the oil type of the fuel tank 36 in S11, the process proceeds to S20 without starting the motor 6 of the oil supply pump 7 to prevent contamination. When the refueling worker removes the refueling nozzle 14 from the refueling port 6a and turns on the lift switch 21a of the hand switch box 20, the process proceeds to S16, in which the hose reel 11 is driven to rotate in the hose winding direction, and the refueling nozzle 14 is rotated. Is raised, and the processing of S16 to S19 is executed.

The process shown in FIG. 7 is executed by the control unit 18 for each of the delivery units 10A to 10D. However, since the control process performed by each control unit 18 is the same, the delivery unit 10A The description for each of 10D to 10D is omitted.

Next, FIG. 8 shows each delivery unit 10A.
FIG. 9 is a block diagram showing the relationship between the control device 18 for each of the .about.10D and the intake / exhaust drive control device 50 for controlling the driving of the common intake pump 33 and exhaust pump 34. FIG. 5 is a flowchart for explaining processing of the control device 50.

In FIG. 8, in a pipe connecting the intake pump 33 and the three-way switching valves 35A to 35D of the respective delivery units 10A to 10D, a three-way switching valve 35A (first three-way switching valve) of the intake pump 33 and the delivery unit 10A is provided. Switching valve) and the non-branch portion 41a of the intake pipe 41 connecting the three-way switching valve 35B (second three-way switching valve) of the delivery unit 10B.
Are connected to branch pipes 43A, 43B communicating with the first distribution solenoid valves 42A, 42B, respectively. Also, a three-way switching valve 35C of the intake pump 33 and the delivery unit 10C.
A second distribution solenoid valve 45 is provided at the non-branch portion 44a of the intake pipe 44 connecting the (third three-way switching valve) and the three-way switching valve 35D (fourth three-way switching valve) of the delivery unit 10D.
Branch pipes 46A and 46B communicating with A and 45B, respectively, are connected. The exhaust pump 34 is connected to each of the three-way switching valves 35A to 35D via an exhaust pipe 37.

Then, the intake pump 33 and the exhaust pump 3
4, the first distribution solenoid valve 42 and the second distribution solenoid valve 45
Drive / stop control is performed according to the processing of the flowchart of the intake / exhaust drive control device 50 shown in FIG. As described above, the three-way switching valves 35A to 35D are switched by the control devices 18A to 18D of the delivery units 10A to 10D.

When any one of the three-way switching valves 35A to 35D is switched to a state of communication with the intake pump 33, the flow from the opening of the vapor suction tube 30 corresponding to the three-way switching valve 35X is changed. The suction volume is
The first and second three-way switching valves 35X are fixed so as to be constant regardless of whether the three-way switching valve 35X is in communication with the suction pump 33 or not.
Are provided with distribution solenoid valves 42 and 45 and branch pipes 43 and 46.

That is, in the case of the present embodiment, the branch pipes 43A, 43A via the first distribution solenoid valves 42A, 42B.
The amount of suction from the opening on the front end side of B and the amount of suction from the opening on the front end side of each of the branch pipes 46A, 46B via the second distribution solenoid valves 44A, 45B are respectively three-way switching valves 35A.
To 35D, only one of the three-way switching valves 35X is switched to a communication state with the intake pump 33, and the remaining three-way switching valve 35 is switched to a non-communication state with the intake pump 33. The vapor suction tube 3 corresponding to the one three-way switching valve 35X switched to the communication state
The first and second distribution solenoid valves 42 and 45 and the branch pipes 43 and 46 are provided in advance so as to be equal to the suction amount from the 0 opening.

Next, referring to FIG. 9, according to the use condition of the four delivery units 10A to 10D, the intake / exhaust drive control device 50 firstly sets the delivery unit 10 in S21.
Initial value n = among numbers n = 1 to 4 corresponding to A to 10D
Set 1 That is, in the case of this embodiment, the number n = 1 is in the delivery unit 10A, the number n = 2 is in the delivery unit 10B, and the number n = 3 is in the delivery unit 10C.
The number n = 4 corresponds to the delivery unit 10D.

In the next S22, the control unit 18n of the delivery unit 10 of the number n, from the control unit 18n of the first delivery unit 10A corresponding to the number n = 1 in this case.
It is checked whether or not the intake pump drive instruction signal has been energized and output from A. Delivery unit 10 of number n
Of the first delivery unit 1
When the intake pump drive instruction signal is energized and output from the control device 18A of the intake / exhaust system, the intake / exhaust drive control device 50
Indicates that, among the intake processing control flags KF formed in the storage unit, the intake processing performed with the oil type determination processing is performed for the delivery unit 10 of the number n (in this case, n = 1). Process control flag KF that stores
Check whether (n) is 1 (S2)
3).

Then, the intake control processing flag KF
If (n) is not equal to 1 and the air intake process has not been performed on the nth, that is, in this case, the first delivery unit 10A, the intake / exhaust drive control device 50
First, in S24, the value of the intake processing number counter (KC), which counts the number of delivery units 10 during intake processing formed in the storage unit, is incremented by one, and in S25, the n-th, that is, the first in this case, the first processing is performed. The intake control process flag KF (n) is set to 1 for the delivery unit 10A, and the intake air control process described below is executed in S26.

The intake air amount control process is performed based on control data of a distribution solenoid valve operation table 51 shown in FIG. 10, for example, which is stored in advance in a storage section of the intake / exhaust drive control device 50.
The intake / exhaust drive control device 50 sets the intake control processing flag K
F (n) based on the first and second distribution solenoid valves 4
Opening and closing are performed for 2, 45. That is, in the case of the present embodiment, at least one of the delivery units 10 switches the three-way switching valve 35 so as to communicate with the intake pump 33 by the distribution electromagnetic valve operation table 51 so that the intake process is performed at any time during the intake process. The first and second delivery units are set so that the sum of the number of delivery units inside and the number of first and second distribution solenoid valves 42 and 45 that are open at that time becomes the number of all delivery units. The distribution solenoid valves 42 and 45 are controlled to open and close.

That is, based on the count value of KC, FIG.
In accordance with the control data of the distribution solenoid valve operation table 51 shown in FIG. 5, for example, when the oil type is being determined by the delivery units 10A and 10B of the oil supply nozzles 14A and 14B, the suction pump 3
3 is started, and the first distribution solenoid valves 42A and 42B are kept closed. For example, when the oil type is being determined by the delivery units 10A and 10C of the refueling nozzles 14A and 14C,
In the first distribution solenoid valve 42A, the valves 42A and 42B are closed,
The second distribution solenoid valve 45 keeps the valves 45C and 45D closed and open, respectively, while keeping the valve open.

On the other hand, if the intake pump drive instruction signal is inactive at S22, the process proceeds to S27,
The intake / exhaust drive control device 50 determines the number n (in this case, n) in the intake control processing flag KF formed in the storage unit.
It is checked whether or not the intake processing control flag KF (n), which stores that the intake processing performed in conjunction with the oil type determination processing for the delivery unit 10 of (= 1) is being performed, is 1 (S27). ).

Here, when KF (n) = 1 is set, the oil type determination process has been completed for the delivery unit 10 of the number n (in this case, n = 1), and the process proceeds to S28. Then, the value of the intake processing counter (KC) for counting the number of delivery units 10 during the intake processing is decremented by one. In the next S29, the intake processing control flag KF (n) is reset to 0 for the n-th, that is, in this case, the first delivery unit 10A, and then the intake air processing control in S26 is executed.

After the intake air amount process control in S26, or in S23, KF (n) = 1 is set and the delivery unit 10 of the number n (in this case, n = 1) is performed together with the oil type determination process. When the intake process has already been started, or in S27, the KF (n) is already in the 0 state, and the intake process performed with the oil type determination process for the delivery unit 10 of the number n (in this case, n = 1) When the process is completed or in standby, the process proceeds to S30, and it is checked whether the exhaust pump drive instruction signal output from the control device 18 of the delivery unit 10 of the number n (in this case, n = 1) is activated. I do. When the exhaust pump drive instruction signal is energized from the controller 18 of the delivery unit 10 at the number n (n = 1 in this case),
The exhaust drive control device 50 determines the number n (in this case, n =
It is checked whether or not the exhaust processing control flag HF (n) that stores that the exhaust processing is being performed for the delivery unit 10 of 1) is 1 (S31).

If the delivery unit 10 of the number n (in this case, n = 1) has been reset at HF (n) = 0 and the exhaust process has not been executed yet, S32
Then, the value of the exhaust processing number counter (HC) for counting the number of delivery units 10 during the exhaust processing is incremented by one. Then, in the next S33, the fact that the exhaust processing control flag HF (n) is set to 1 for the n-th, that is, in this case, the first delivery unit 10A, is stored to indicate that the exhaust processing is being performed. And the exhaust treatment number counter (H
After confirming the value of C), if the value of the exhaust processing number counter (HC) is 1 or more, the exhaust pump 34 is driven to execute the exhaust control processing.

On the other hand, when the exhaust pump drive instruction signal is deactivated in S30, the process proceeds to S35, and the exhaust processing control flag HF (n) is set for the delivery unit 10 of the number n (in this case, n = 1). Check if) is 1 or not. Here, HF (n) = 1
Is set, the number n (in this case, n
Since the exhaust process has been completed for the delivery unit 10 of (= 1), the process proceeds to S36, where the value of an exhaust process number counter (HC) for counting the number of the delivery units 10 during the exhaust process is decremented by 1, and In the next S37, the exhaust processing control flag HF (n) is reset to 0 for the delivery unit 10 of the number n (in this case, n = 1), and the exhaust control processing in S34 is executed, that is, the exhaust processing number counter is set. When the value of (HC) is 0, the driving of the exhaust pump is stopped.

After the exhaust control process in S34 or in S31, HF (n) = 1 is set and the number n
If the exhaust process has already been started for the delivery unit 10 (n = 1 in this case), or the HF
(N) = 0 and the number n (in this case, n =
If the delivery unit 10 of 1) is finished or in standby with respect to the intake process, the process proceeds to S38, where 1 is added to the delivery unit number n, and it is checked in S39 whether the delivery unit number n is n = m. . In this embodiment, m = 2.

Therefore, the value of the delivery unit number n is m
In the following cases, the process returns to S22 and the delivery unit number n
When the value of the delivery unit number n is larger than m, the processing of S22 to S34 is performed for
Returning to step 21, after performing the initial value setting process of the delivery unit number n, the processes of S22 to S34 are performed.

As described above, the distribution solenoid valves 42 and 45 are controlled to be opened and closed depending on whether or not each of the delivery units 10A to 10D is discriminating the oil type so that the amount of suction from each vapor suction tube 30 is always equalized. The vapor suction amount can be adjusted, and the characteristics of the oil type detection sensor 32 provided for each of the delivery units 10A to 10D can be kept constant. Therefore, each of the plurality of delivery units 10A to 10A to 10
By making the oil type detection accuracy in D constant, the reliability of oil type detection can be improved.

In the above embodiment, the suspension type refueling device provided with four delivery units 10A to 10D has been described as an example. However, the present invention is not limited to this, and two or more delivery units may be provided. Needless to say, the present invention can be applied to any suspension type lubrication device.

In the above embodiment, one intake pump 33 and one exhaust pump 34 are provided for the four delivery units 10A to 10D. However, the present invention is not limited to this. Alternatively, an intake pump 33 and an exhaust pump 34 may be provided for each of the delivery units 10A to 10D.

In the above embodiment, a single-type suspension type weighing machine in which one delivery nozzle 10 and one supply hose 13 are suspended from one delivery unit 10 is described as an example. 10 to multiple refueling nozzles 1
It is needless to say that the present invention can be applied to a double or multi-type suspended weighing machine in which the suspension 4 is suspended.

According to the second aspect of the present invention, if the intake or exhaust is sequentially performed for each oil supply nozzle / oil supply hose (or even if it is not repeated), the distribution solenoid valve of the above embodiment can be used. No need to provide.

In the third embodiment, two distribution solenoid valves are driven to open and close in the above embodiment. However, one distribution solenoid valve may be adjusted in multiple stages. Further, a configuration may be employed in which one or a plurality of intake pumps are drive-controlled in accordance with the number of input of the valve opening signals ka to kd without distributing electromagnetic valves.

[0076]

As described above, according to the first aspect of the present invention, the suspension lubricating apparatus is provided for each lubrication nozzle and lubrication hose of the suspension lubrication apparatus, and one end of the suspension lubrication apparatus is located on the tip side of the lubrication nozzle. At the other end of the vapor suction passage extending along the oil supply hose to a high point of the gas filling station, at the same distance from one end of the vapor suction passage without changing for each oil supply nozzle and oil supply hose. Since the oil type detection sensor and the suction pump are placed in the oil type, the oil type detection accuracy of the oil type detection sensor for each oil supply nozzle and oil supply hose is uniform, and the oil type detection accuracy of each oil type detection sensor is stabilized. Reliability can be improved.

According to a second aspect of the present invention, in the first aspect of the invention, a single common pump is used as a suction pump provided for each oil supply nozzle and each oil supply hose, and this pump is used in conjunction with each oil type detection sensor. Since the distance between the oil pump and the common pump is the same, the accuracy of oil type detection of each oil type detection sensor can be stabilized and reliability can be improved.
It is possible to reduce the number of suction pumps and increase the efficiency of the installation space of the suspension type lubrication device.

According to a third aspect of the present invention, in the second aspect of the present invention, the amount of suction of the atmosphere sucked through each of the vapor suction passages regardless of the number of the vapor suction passages which simultaneously sucks the common pump. Since the suction amount adjusting means is provided to make the oil level constant, even if the refueling work for each refueling nozzle and refueling hose is performed simultaneously in parallel, the oil type detection for each refueling nozzle and refueling hose is performed. The oil type detection accuracy of the sensors is uniform, and not only can the oil type detection accuracy of each oil type detection sensor be stabilized and reliability can be improved, but also the oil type identification work can be performed at the same time. It has features such as speeding up, speeding up, and improving refueling services.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of a suspension type oil supply device according to the present invention.

FIG. 2 is a perspective view showing an installation position of each delivery unit.

FIG. 3 is a longitudinal sectional view showing an internal configuration of a delivery unit.

FIG. 4 is a vertical sectional view showing positions of an oil type detection sensor, a three-way switching valve, an intake pump, and an exhaust pump.

FIG. 5 is a configuration diagram illustrating a schematic configuration of an oil type discrimination system.

FIG. 6 is a configuration diagram showing a positional relationship among an oil supply nozzle, an oil type detection sensor, a three-way switching valve, an intake pump, and an exhaust pump.

FIG. 7 is a flowchart illustrating a process executed by the control device.

FIG. 8 is a block diagram illustrating a configuration of an intake / exhaust drive control device.

FIG. 9 is a flowchart for explaining processing of the intake / exhaust drive control device.

FIG. 10 is a view showing a distribution solenoid valve operation table stored in a memory of the control device.

[Explanation of symbols]

 4 (4A-4D) Refueling pipe 5 Underground tank 10 (10A-10D) Delivery unit 11 Hose reel 13 Refueling hose 14 (14A-14D) Refueling nozzle 18 (18A-18D) Control device 20 Hand switch box 30 Vapor suction tube 31 Oil Type Judgment / Recovery Line 32 (32A to 32D) Oil Type Detection Sensor 33 Intake Pump 34 Exhaust Pump 35 (35A to 35D) Three-way Switching Valve 36 Fuel Tank 42 (42A, 42B) First Distribution Solenoid Valve 45 ( 45A, 45B) Second distribution solenoid valve 50 Intake and exhaust drive control device 51 Distribution solenoid valve operation table

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-57600 (JP, A) JP-A-64-58697 (JP, A) JP-A-4-294793 (JP, A) JP-A 62-586 220496 (JP, A) JP-A-62-135190 (JP, A) JP-A-5-77897 (JP, A) JP-A-5-278795 (JP, A) Japanese Utility Model Publication No. 58-94696 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) B67D 5/365 B67D 5/32 B67D 5/378 B67D 5/58

Claims (3)

(57) [Claims] An oil supply hose having an oil supply nozzle connected to a tip thereof is suspended from a delivery unit provided at a high point of a gas station, and a lifting mechanism provided in the delivery unit is driven to drive the oil supply hose. In a suspension-type refueling device configured to raise and lower a refueling nozzle connected to a tip of a refueling hose between a height position suitable for refueling work and a height position that does not hinder the traveling of the vehicle, In order to suck the vapor remaining in the tank in which the work is performed, one end opens to the tip side of the fueling nozzle, and the other end extends through a vapor suction passage extending along the fueling hose to a high point of the fueling station. A fuel supply nozzle is provided for each refueling nozzle and a refueling hose of the suspension type refueling device. Each of the vapor suction passages detects an oil type in the fuel tank based on a concentration of the vapor sucked through the vapor suction passage. A pump for suctioning the atmosphere around the opening from the one end opening of the species detection sensor and the vapor suction passage to the oil type detection sensor, wherein the oil type detection sensor and the pump provided in each of the vapor suction passages are the vapor A suspension type lubricating device, wherein the lubricating device is disposed at a position at the same distance from one end of the suction passage. 2. A fueling hose having a fueling nozzle connected to a tip thereof is suspended from a delivery unit provided at a high point of a fueling station, and a lifting mechanism provided in the delivery unit is driven to drive the fueling hose. In a suspension-type refueling device configured to raise and lower a refueling nozzle connected to a tip of a refueling hose between a height position suitable for refueling work and a height position that does not hinder the traveling of the vehicle, In order to suck the vapor remaining in the tank in which the work is performed, one end opens to the tip side of the fueling nozzle, and the other end extends through a vapor suction passage extending along the fueling hose to a high point of the fueling station. A fuel supply nozzle is provided for each refueling nozzle and a refueling hose of the suspension type refueling device. Each of the vapor suction passages detects an oil type in the fuel tank based on a concentration of the vapor sucked through the vapor suction passage. An oil type detection sensor provided in each of the vapor suction passages is disposed at a position at the same distance from one end side of the vapor suction passage, and is communicated with each of the vapor suction passages; A common pump for sucking an atmosphere around the opening from an opening on one end side of the passage so that a distance between each of the oil type detection sensors and the common pump is equal to each other; Type refueling device. 3. A refueling hose having a refueling nozzle connected to a tip thereof is suspended from a delivery unit provided at a high point of a fueling station, and a lifting mechanism provided in the delivery unit is driven to drive the refueling hose. In a suspension-type refueling device configured to raise and lower a refueling nozzle connected to a tip of a refueling hose between a height position suitable for refueling work and a height position that does not hinder the traveling of the vehicle, In order to suck the vapor remaining in the tank in which the work is performed, one end is opened at the tip side of the fueling nozzle, and the other end is provided with a vapor suction passage extending to a high point of the fueling station along the fueling hose. A fuel supply nozzle is provided for each refueling nozzle and a refueling hose of the suspension type refueling device. Each of the vapor suction passages detects an oil type in the fuel tank based on a concentration of the vapor sucked through the vapor suction passage. An oil type detection sensor provided in each of the vapor suction passages is disposed at a position at the same distance from one end side of the vapor suction passage, and is communicated with each of the vapor suction passages; A common pump for sucking the atmosphere around the opening from one end side opening of the passage is provided so that the distance between each of the oil type detection sensors and the common pump is the same distance, and the common pump simultaneously sucks. And a suction amount adjusting means for making the suction amount of the atmosphere sucked through each of the vapor suction passages constant regardless of the number of the vapor suction passages.